CVE-2020-35683 Memory corruption in n/a
An out-of-bounds read in HCC Nichestack's ICMP parser allows attackers to cause a Denial-of-Service by sending crafted packets.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-35683?
CVE-2020-35683 is a high-severity memory corruption vulnerability in n/a, published on 19 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in HCC Nichestack 3.0. The code that parses ICMP packets relies on an unchecked value of the IP payload size (extracted from the IP header) to compute the ICMP checksum. When the IP payload size is set to be smaller than the size of the IP header, the ICMP checksum computation function may read out of bounds, causing a Denial-of-Service.
Weakness: CWE-125
Which versions are affected by CVE-2020-35683?
It affects 2 products.
Products include Hcc-Embedded Nichestack, Siemens 7km9300-0ae02-0aa0 Firmware.
How do I fix CVE-2020-35683?
No fix has been published for CVE-2020-35683 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-35683 being exploited?
There is no known exploitation of CVE-2020-35683 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-5mrv-mxfm-f5j8.